Robust succulent plants, usually more than 100 cm tall, glabrous. Leaves opposite-verticillate, 60-150 x 18-65 mm, elliptic-ovate, serrate, base glandular stipitate; petiole 30-35 mm long. Inflorescence short, compact. Peduncles up to 90 mm long. Bracts elliptic-ovate or lanceolate-ovate, 7-8(-10) mm long. Flowers pink-red or red-purple, c. 30 mm long. Lateral sepals oblique cordate, 7-9 mm long. Lower sepal saccate, abruptly ending in a spur 5-6 mm long; spur incurved. Anterior petal orbicular-depressed, 7-8 x 12 mm; dorsally crested, apex bilobed. Lateral united petals 26 mm long, unequal; lower one larger (15 mm), upper with a thin incurved appendage. Capsule broadly clavate, 14-18(-25) mm long, nodding. Seeds sub globose, 3 mm broad, rugose.